:root {
  --ink: #141b2d;
  --muted: #647087;
  --soft: #edf1f6;
  --line: #dce2ea;
  --paper: #f8fafc;
  --lime: #d8ff5a;
  --coral: #ff795f;
  --blue: #6b8cff;
  --shadow: 0 22px 60px rgba(20, 27, 45, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #eef2f6;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 7% 5%, rgba(216, 255, 90, 0.24), transparent 24rem),
    radial-gradient(circle at 88% 13%, rgba(107, 140, 255, 0.12), transparent 26rem),
    #eef2f6;
}

button, input { font: inherit; }
button { cursor: pointer; }

.app-shell { max-width: 1480px; margin: 0 auto; padding: 0 32px 28px; }

.topbar {
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(20, 27, 45, 0.1);
}

.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-size: 12px; font-weight: 900; letter-spacing: 0.18em; }
.brand-mark { width: 29px; height: 29px; display: grid; place-items: center; border: 2px solid var(--ink); border-radius: 9px; transform: rotate(-7deg); }
.brand-mark span { width: 12px; height: 8px; display: block; border-radius: 2px; background: var(--coral); transform: rotate(7deg); }
.privacy-note { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; font-weight: 700; }
.status-dot, .live-pulse { width: 8px; height: 8px; border-radius: 50%; background: #69b78b; box-shadow: 0 0 0 4px rgba(105, 183, 139, 0.15); }

.page-content { padding: 66px 0 40px; }
.intro { max-width: 740px; margin-bottom: 38px; }
.eyebrow, .section-kicker { color: #78849a; font-size: 11px; font-weight: 900; letter-spacing: 0.18em; }
.eyebrow span { margin-left: 10px; color: var(--coral); }
.intro h1 { max-width: 690px; margin: 14px 0 16px; font-size: clamp(2.5rem, 5vw, 5rem); line-height: 0.98; letter-spacing: -0.065em; overflow-wrap: anywhere; }
.intro p { max-width: 590px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.65; overflow-wrap: anywhere; }

.workspace { display: grid; grid-template-columns: minmax(290px, 360px) minmax(0, 1fr); gap: 22px; align-items: stretch; }
.control-panel, .preview-panel { min-width: 0; border: 1px solid rgba(20, 27, 45, 0.1); border-radius: var(--radius-lg); background: rgba(255,255,255,0.8); box-shadow: var(--shadow); }
.control-panel { display: flex; flex-direction: column; padding: 27px; }
.panel-heading, .preview-toolbar { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.panel-heading h2, .preview-toolbar h2 { margin: 7px 0 0; font-size: 20px; letter-spacing: -0.03em; }
.step-count { color: #8a95a7; font-size: 11px; font-weight: 900; letter-spacing: 0.08em; }
.field-group { margin-top: 27px; }
.field-label-row { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin-bottom: 9px; }
.field-label-row label, .field-label { color: var(--ink); font-size: 13px; font-weight: 850; }
.field-hint { color: #8b95a7; font-size: 11px; font-weight: 700; }
.dropzone { position: relative; min-height: 172px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; padding: 22px; text-align: center; border: 1px dashed #adb7c8; border-radius: var(--radius-md); background: linear-gradient(145deg, #f8fafc, #eef2f7); transition: border-color .2s, background .2s, transform .2s; }
.dropzone:hover, .dropzone.is-dragging { border-color: var(--coral); background: #fff7f3; transform: translateY(-1px); }
.dropzone input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.upload-icon { position: relative; width: 42px; height: 42px; margin-bottom: 7px; border-radius: 14px; background: var(--ink); }
.upload-icon::before { content: ""; position: absolute; left: 13px; top: 16px; width: 16px; height: 12px; border: 2px solid var(--lime); border-radius: 3px; }
.upload-icon span { position: absolute; left: 20px; top: 10px; width: 2px; height: 12px; background: var(--lime); }
.upload-icon i { position: absolute; left: 16px; top: 10px; width: 9px; height: 9px; border-top: 2px solid var(--lime); border-left: 2px solid var(--lime); transform: rotate(45deg); }
.dropzone-title { font-size: 14px; font-weight: 850; }
.dropzone-subtitle { color: var(--muted); font-size: 12px; }
.file-status { max-width: 100%; margin-top: 9px; overflow: hidden; color: #8b95a7; font-size: 11px; font-weight: 750; text-overflow: ellipsis; white-space: nowrap; }
.text-input { width: 100%; min-height: 50px; padding: 0 14px; color: var(--ink); border: 1px solid var(--line); border-radius: var(--radius-sm); outline: none; background: #fff; transition: border-color .2s, box-shadow .2s; }
.text-input::placeholder { color: #9da7b5; }
.text-input:focus { border-color: var(--ink); box-shadow: 0 0 0 4px rgba(20, 27, 45, 0.08); }
.control-divider { height: 1px; margin: 26px 0 23px; background: var(--line); }
.setting-group + .setting-group { margin-top: 20px; }
.segmented-control { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; border-radius: 13px; background: #edf1f5; }
.segment-button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 38px; padding: 0 10px; color: #7d889a; border: 0; border-radius: 10px; background: transparent; font-size: 12px; font-weight: 850; }
.segment-button.is-active { color: var(--ink); background: #fff; box-shadow: 0 2px 8px rgba(20, 27, 45, 0.08); }
.theme-swatch { width: 10px; height: 10px; border-radius: 50%; border: 1px solid rgba(20,27,45,.15); }
.light-swatch { background: #fff; }
.dark-swatch { background: #222b3f; border-color: #222b3f; }
.download-button { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 53px; margin-top: 28px; padding: 0 17px 0 19px; color: var(--ink); border: 1px solid var(--ink); border-radius: 14px; background: var(--lime); font-size: 13px; font-weight: 900; transition: transform .2s, box-shadow .2s; }
.download-button:hover { transform: translateY(-2px); box-shadow: 0 10px 18px rgba(20, 27, 45, 0.13); }
.button-arrow { font-size: 20px; line-height: 1; }
.privacy-copy { display: flex; gap: 8px; align-items: flex-start; margin: 14px 2px 0; color: #8b95a7; font-size: 11px; line-height: 1.45; }
.lock-icon { color: var(--coral); font-size: 17px; line-height: 11px; transform: rotate(-25deg); }

.preview-panel { padding: 27px 27px 22px; overflow: hidden; }
.preview-meta { display: inline-flex; align-items: center; gap: 9px; padding-top: 3px; color: #7d889a; font-size: 11px; font-weight: 850; }
.preview-stage { position: relative; min-height: 620px; margin-top: 24px; padding: 44px 25px 22px; overflow: hidden; border: 1px solid rgba(20, 27, 45, 0.1); border-radius: 21px; background: #e5eaf1; }
.stage-grid { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(20,27,45,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(20,27,45,.04) 1px, transparent 1px); background-size: 26px 26px; mask-image: linear-gradient(to bottom, black, transparent 88%); }
.youtube-window { position: relative; z-index: 1; width: 100%; max-width: 100%; overflow: hidden; border: 1px solid rgba(20,27,45,.12); border-radius: 15px; background: #fff; box-shadow: 0 20px 38px rgba(20,27,45,.16); }
.youtube-topbar { display: flex; align-items: center; gap: 24px; min-height: 58px; padding: 0 18px; border-bottom: 1px solid #e8ecf1; background: #fff; }
.yt-logo { display: flex; align-items: center; gap: 5px; min-width: 110px; color: #101010; font-size: 16px; font-weight: 900; letter-spacing: -0.06em; }
.yt-play { display: inline-grid; place-items: center; width: 25px; height: 18px; color: #fff; border-radius: 5px; background: #ff0033; font-size: 10px; }
.yt-search { display: flex; align-items: center; justify-content: space-between; width: min(390px, 45%); height: 34px; padding: 0 12px; color: #919aa8; border: 1px solid #d8dee7; border-radius: 20px; font-size: 11px; }
.search-icon { color: #4c5666; font-size: 18px; }
.yt-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.round-action { width: 24px; height: 24px; border-radius: 50%; background: #edf1f5; }
.avatar-action { background: var(--coral); }
.youtube-body { display: flex; min-height: 465px; }
.yt-sidebar { display: flex; flex: 0 0 124px; flex-direction: column; gap: 4px; padding: 19px 10px; border-right: 1px solid #edf0f4; background: #fff; }
.sidebar-item { display: flex; align-items: center; gap: 9px; padding: 10px 10px; color: #657083; border-radius: 9px; font-size: 10px; font-weight: 800; }
.sidebar-item.is-selected { color: #161d2b; background: #f0f3f6; }
.sidebar-item i { width: 15px; color: #4e596a; font-size: 14px; font-style: normal; text-align: center; }
.sidebar-rule { height: 1px; margin: 9px 9px; background: #e9edf2; }
.feed-area { min-width: 0; flex: 1; padding: 18px 18px 26px; background: #fff; }
.feed-chips { display: flex; gap: 7px; margin-bottom: 17px; overflow: hidden; }
.chip { flex: 0 0 auto; padding: 7px 12px; color: #626e7f; border-radius: 8px; background: #f0f2f5; font-size: 10px; font-weight: 850; }
.chip.is-active { color: #fff; background: #161d2b; }
.feed-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px 13px; }
.featured-card { grid-column: span 2; }
.thumbnail-wrap { position: relative; overflow: hidden; aspect-ratio: 16 / 9; border-radius: 10px; background: #d9e0ea; }
.main-thumbnail { background: #dfe6ef; }
.main-thumbnail img { display: none; width: 100%; height: 100%; object-fit: cover; }
.main-thumbnail img.is-visible { display: block; }
.thumbnail-placeholder { position: absolute; inset: 0; display: grid; place-content: center; gap: 8px; text-align: center; color: #546174; background: linear-gradient(135deg, #d8e0eb, #eef2f7); }
.thumbnail-placeholder span { color: #313c4e; font-size: clamp(13px, 1.5vw, 22px); font-weight: 950; letter-spacing: 0.04em; }
.thumbnail-placeholder small { color: #738095; font-size: 10px; }
.thumbnail-placeholder.is-hidden { display: none; }
.duration-badge { position: absolute; right: 7px; bottom: 7px; padding: 3px 5px; color: #fff; border-radius: 4px; background: rgba(0,0,0,.8); font-size: 10px; font-weight: 850; }
.video-info { display: flex; gap: 10px; padding-top: 11px; }
.channel-avatar, .mini-avatar { display: grid; flex: 0 0 auto; place-items: center; width: 28px; height: 28px; color: var(--ink); border-radius: 50%; background: var(--lime); font-size: 9px; font-weight: 950; }
.video-copy { min-width: 0; flex: 1; }
.video-copy h3, .compact-info h3 { display: -webkit-box; overflow: hidden; margin: 0 0 5px; color: #1c2432; font-size: 12px; line-height: 1.25; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.video-copy p, .compact-info p { margin: 0; color: #788496; font-size: 10px; line-height: 1.45; }
.more-button { color: #737e8d; font-size: 17px; line-height: 1; }
.compact-card { min-width: 0; }
.compact-info { display: flex; gap: 8px; padding-top: 9px; }
.compact-info h3 { font-size: 10px; }
.compact-info p { font-size: 9px; }
.mini-avatar { width: 22px; height: 22px; font-size: 7px; }
.abstract-thumb { display: flex; align-items: flex-end; padding: 14px; }
.abstract-word { color: #fff; font-size: clamp(15px, 2vw, 24px); font-weight: 950; line-height: .9; letter-spacing: -0.06em; }
.coral-thumb { background: linear-gradient(135deg, #ff6e57, #be3249); }
.blue-thumb { background: linear-gradient(135deg, #687aff, #293b99); }
.lime-thumb { background: linear-gradient(135deg, #b4e83c, #2f8f83); }
.coral-avatar { background: #ffb39d; }
.blue-avatar { color: #fff; background: #687aff; }
.lime-avatar { background: #b8ec44; }
.stage-caption { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 16px; margin-top: 15px; color: #7b8798; font-size: 10px; font-weight: 750; }

.preview-stage[data-theme="dark"] { background: #161d2b; }
.preview-stage[data-theme="dark"] .stage-grid { background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); }
.preview-stage[data-theme="dark"] .youtube-window, .preview-stage[data-theme="dark"] .youtube-topbar, .preview-stage[data-theme="dark"] .yt-sidebar, .preview-stage[data-theme="dark"] .feed-area { background: #20283a; }
.preview-stage[data-theme="dark"] .youtube-topbar, .preview-stage[data-theme="dark"] .yt-sidebar { border-color: #303a4d; }
.preview-stage[data-theme="dark"] .yt-logo, .preview-stage[data-theme="dark"] .video-copy h3, .preview-stage[data-theme="dark"] .compact-info h3, .preview-stage[data-theme="dark"] .sidebar-item.is-selected { color: #f5f7fb; }
.preview-stage[data-theme="dark"] .yt-search { color: #aab5c5; border-color: #465168; }
.preview-stage[data-theme="dark"] .sidebar-item { color: #aab5c5; }
.preview-stage[data-theme="dark"] .sidebar-item.is-selected, .preview-stage[data-theme="dark"] .chip { background: #303a4d; }
.preview-stage[data-theme="dark"] .chip.is-active { color: #161d2b; background: var(--lime); }
.preview-stage[data-theme="dark"] .video-copy p, .preview-stage[data-theme="dark"] .compact-info p { color: #9ca8ba; }
.preview-stage[data-theme="dark"] .thumbnail-placeholder { color: #d5dce7; background: linear-gradient(135deg, #303a4d, #232c3f); }
.preview-stage[data-theme="dark"] .thumbnail-placeholder span { color: #f5f7fb; }
.preview-stage[data-theme="dark"] .thumbnail-placeholder small { color: #aab5c5; }

.preview-stage[data-mode="phone"] { min-height: 620px; padding: 34px 22px 19px; }
.preview-stage[data-mode="phone"] .youtube-window { width: min(390px, 100%); margin: 0 auto; border-radius: 24px; }
.preview-stage[data-mode="phone"] .youtube-topbar { min-height: 54px; padding: 0 14px; gap: 10px; }
.preview-stage[data-mode="phone"] .yt-logo { min-width: auto; font-size: 14px; }
.preview-stage[data-mode="phone"] .yt-search { width: auto; flex: 1; height: 30px; }
.preview-stage[data-mode="phone"] .yt-actions .round-action:first-child { display: none; }
.preview-stage[data-mode="phone"] .youtube-body { min-height: 490px; }
.preview-stage[data-mode="phone"] .yt-sidebar { display: none; }
.preview-stage[data-mode="phone"] .feed-area { padding: 14px 12px 22px; }
.preview-stage[data-mode="phone"] .feed-chips { margin-bottom: 13px; }
.preview-stage[data-mode="phone"] .feed-grid { display: flex; flex-direction: column; gap: 17px; }
.preview-stage[data-mode="phone"] .featured-card, .preview-stage[data-mode="phone"] .compact-card { width: 100%; }
.preview-stage[data-mode="phone"] .compact-card { display: grid; grid-template-columns: 142px minmax(0,1fr); gap: 10px; align-items: start; }
.preview-stage[data-mode="phone"] .compact-info { padding-top: 0; }
.preview-stage[data-mode="phone"] .abstract-thumb { padding: 10px; }
.preview-stage[data-mode="phone"] .abstract-word { font-size: 16px; }
.preview-stage[data-mode="phone"] .stage-caption { font-size: 9px; }

.footer-note { display: flex; justify-content: space-between; gap: 18px; padding: 18px 2px 0; color: #8691a2; font-size: 11px; font-weight: 750; }

@media (max-width: 1040px) {
  .workspace { grid-template-columns: 310px minmax(0, 1fr); }
  .control-panel, .preview-panel { padding: 22px; }
  .preview-stage { padding-left: 14px; padding-right: 14px; }
  .yt-sidebar { flex-basis: 102px; }
}

@media (max-width: 780px) {
  .app-shell { padding: 0 16px 20px; }
  .topbar { height: 68px; }
  .brand { font-size: 10px; letter-spacing: .13em; }
  .privacy-note { font-size: 10px; }
  .page-content { padding-top: 42px; }
  .intro { margin-bottom: 28px; }
  .intro { width: 100%; }
  .intro h1 { width: 100%; max-width: calc(100vw - 32px); font-size: 1.9rem; letter-spacing: -0.08em; }
  .intro p { width: 100%; max-width: calc(100vw - 32px); }
  .intro p { font-size: 15px; }
  .workspace { grid-template-columns: 1fr; }
  .preview-panel { order: -1; }
  .preview-stage { min-height: 520px; }
  .youtube-body { min-height: 390px; }
  .yt-sidebar { display: none; }
  .feed-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .featured-card { grid-column: span 2; }
  .stage-caption { flex-direction: column; gap: 5px; }
}

@media (max-width: 500px) {
  .privacy-note { display: none; }
  .preview-toolbar { flex-direction: column; gap: 9px; }
  .preview-meta { padding-top: 0; }
  .preview-stage { min-height: 500px; padding: 23px 10px 16px; }
  .youtube-window { border-radius: 12px; }
  .youtube-topbar { gap: 8px; padding: 0 10px; }
  .yt-logo { min-width: auto; font-size: 13px; }
  .yt-play { width: 21px; height: 15px; font-size: 8px; }
  .yt-search { width: auto; flex: 1; }
  .feed-area { padding: 13px 10px 18px; }
  .feed-grid { gap: 14px 9px; }
  .video-copy h3 { font-size: 11px; }
  .footer-note { flex-direction: column; gap: 6px; }
}

/* Shared navigation and editorial pages */
.site-header { height: auto; min-height: 84px; gap: 16px; flex-wrap: wrap; padding: 17px 0; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 5px; margin-left: auto; }
.site-nav a, .footer-nav a { padding: 8px 9px; color: #6d788b; border-radius: 9px; text-decoration: none; font-size: 11px; font-weight: 850; white-space: nowrap; }
.site-nav a:hover, .site-nav a.is-current, .footer-nav a:hover { color: var(--ink); background: rgba(255,255,255,.78); }
.footer-note { align-items: center; flex-wrap: wrap; }
.footer-nav { display: flex; align-items: center; justify-content: center; gap: 1px; flex-wrap: wrap; margin-left: auto; }
.footer-nav a { padding: 4px 7px; font-size: 10px; }

.guide-page, .info-page { padding: 55px 0 42px; }
.guide-hero, .info-hero { max-width: 1080px; margin: 0 auto 30px; }
.guide-hero h1, .info-hero h1 { max-width: 900px; margin: 13px 0 14px; color: var(--ink); font-size: clamp(2.7rem, 6vw, 5.9rem); line-height: .94; letter-spacing: -.075em; }
.answer-lede { max-width: 790px; margin: 0; color: #435066; font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.5; letter-spacing: -.02em; }
.answer-lede strong { color: var(--ink); }
.source-line { margin: 15px 0 0; color: #7b8798; font-size: 11px; line-height: 1.5; }
.source-line a, .text-link { color: #3d57b8; font-weight: 850; text-underline-offset: 3px; }
.spec-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 28px; }
.spec-card { min-height: 128px; display: flex; flex-direction: column; justify-content: space-between; padding: 17px; border: 1px solid rgba(20,27,45,.1); border-radius: 18px; background: rgba(255,255,255,.82); box-shadow: 0 12px 32px rgba(20,27,45,.07); }
.spec-card-accent { border-color: rgba(255,121,95,.65); background: linear-gradient(150deg, #fff8f4, #fff); }
.spec-card span, .surface-label { color: #78849a; font-size: 10px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.spec-card strong { margin-top: 10px; color: var(--ink); font-size: clamp(1.2rem, 2vw, 1.75rem); letter-spacing: -.055em; }
.spec-card small { color: #7d889a; font-size: 10px; line-height: 1.35; }
.guide-section { max-width: 1080px; margin: 0 auto; padding: 32px 0; border-top: 1px solid rgba(20,27,45,.1); }
.guide-section h2, .info-section h2 { max-width: 650px; margin: 8px 0 18px; color: var(--ink); font-size: clamp(1.8rem, 3vw, 3rem); line-height: 1; letter-spacing: -.06em; }
.guide-split { display: grid; grid-template-columns: minmax(0, .92fr) minmax(360px, 1.08fr); gap: 34px; align-items: start; }
.section-lede { max-width: 590px; margin: 0 0 20px; color: var(--muted); font-size: 15px; line-height: 1.65; }
.check-list { display: grid; gap: 12px; margin-top: 23px; }
.check-list > div { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 11px; align-items: start; padding: 13px 0; border-top: 1px solid var(--line); }
.check-list p { margin: 0; color: #5d6b80; font-size: 13px; line-height: 1.55; }
.check-list strong { color: var(--ink); }
.check-mark { display: grid; place-items: center; width: 29px; height: 29px; color: var(--ink); border: 1px solid var(--ink); border-radius: 9px; background: var(--lime); font-size: 9px; font-weight: 950; }
.dimension-figure { margin: 0; padding: 16px; border: 1px solid rgba(20,27,45,.1); border-radius: 24px; background: rgba(255,255,255,.66); box-shadow: var(--shadow); }
.dimension-figure svg { display: block; width: 100%; height: auto; }
.dimension-figure figcaption { margin: 5px 7px 0; color: #7b8798; font-size: 10px; line-height: 1.5; }
.callout-section { padding-bottom: 39px; }
.surface-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }
.surface-card { min-height: 190px; padding: 20px; border: 1px solid rgba(20,27,45,.1); border-radius: 20px; background: #fff; box-shadow: 0 12px 30px rgba(20,27,45,.06); }
.surface-card-coral { background: #fff3ee; border-color: rgba(255,121,95,.4); }
.surface-card-lime { background: #f4fbdc; border-color: rgba(163,204,58,.5); }
.surface-card h3 { margin: 14px 0 9px; color: var(--ink); font-size: 19px; line-height: 1.05; letter-spacing: -.045em; }
.surface-card p { margin: 0; color: #657286; font-size: 12px; line-height: 1.6; }
.source-section { padding-bottom: 0; }
.source-notes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.source-notes p { margin: 0; padding: 17px 18px; color: #5d6b80; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.55); font-size: 12px; line-height: 1.6; }
.note-tag { display: inline-block; margin-right: 7px; padding: 4px 6px; border-radius: 6px; font-size: 9px; font-weight: 950; letter-spacing: .08em; }
.note-tag.is-found { color: #275c3c; background: #d8f2dc; }
.note-tag.is-missing { color: #874230; background: #ffe0d6; }

.info-hero { max-width: 940px; }
.info-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; max-width: 1080px; margin: 0 auto; }
.info-card { min-height: 250px; padding: 24px; border: 1px solid rgba(20,27,45,.1); border-radius: 22px; background: #fff; box-shadow: var(--shadow); }
.info-card-coral { background: #fff3ee; border-color: rgba(255,121,95,.4); }
.info-card-lime { background: #f4fbdc; border-color: rgba(163,204,58,.5); }
.info-card h2 { margin: 15px 0 13px; color: var(--ink); font-size: 24px; line-height: 1; letter-spacing: -.055em; }
.info-card p, .info-section p { margin: 0; color: #637085; font-size: 14px; line-height: 1.7; }
.info-section { max-width: 1080px; margin: 30px auto 0; padding: 31px 0 0; border-top: 1px solid rgba(20,27,45,.1); }
.info-section p { max-width: 700px; }
.legal-page .info-hero { margin-bottom: 23px; }
.policy-list { max-width: 1080px; margin: 0 auto; border-top: 1px solid rgba(20,27,45,.1); }
.policy-row { display: grid; grid-template-columns: 55px minmax(0, 1fr); gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.policy-row-coral { padding-left: 18px; border-radius: 16px; background: linear-gradient(90deg, #fff3ee, transparent 75%); }
.policy-number { color: var(--coral); font-size: 12px; font-weight: 950; letter-spacing: .12em; }
.policy-row h2 { margin: 0 0 7px; color: var(--ink); font-size: 20px; letter-spacing: -.04em; }
.policy-row p { max-width: 760px; margin: 0; color: #637085; font-size: 13px; line-height: 1.65; }
.contact-card { display: grid; grid-template-columns: 65px minmax(0, 1fr); gap: 20px; max-width: 800px; margin: 0 auto; padding: 27px; border: 1px solid rgba(255,121,95,.45); border-radius: 24px; background: #fff3ee; box-shadow: var(--shadow); }
.contact-icon { display: grid; place-items: center; width: 55px; height: 55px; color: var(--ink); border: 1px solid var(--ink); border-radius: 17px; background: var(--lime); font-size: 25px; font-weight: 900; }
.contact-card h2 { margin: 12px 0 10px; color: var(--ink); font-size: 26px; letter-spacing: -.055em; }
.contact-card p { max-width: 650px; margin: 0; color: #657286; font-size: 14px; line-height: 1.65; }
.contact-checks { display: flex; flex-wrap: wrap; gap: 9px; }
.contact-checks span { padding: 10px 13px; color: #526177; border: 1px solid var(--line); border-radius: 10px; background: #fff; font-size: 12px; font-weight: 800; }

@media (max-width: 900px) {
  .site-nav { order: 3; width: 100%; justify-content: flex-start; overflow-x: auto; }
  .spec-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-split { grid-template-columns: 1fr; }
  .surface-grid, .info-grid { grid-template-columns: 1fr; }
  .info-card { min-height: 0; }
  .source-notes { grid-template-columns: 1fr; }
  .footer-nav { margin-left: 0; order: 3; justify-content: flex-start; }
}

@media (max-width: 500px) {
  .site-header { align-items: center; }
  .site-header .privacy-note { margin-left: auto; }
  .guide-page, .info-page { padding-top: 37px; }
  .guide-hero h1, .info-hero h1 { font-size: 2.55rem; }
  .answer-lede { font-size: 1.05rem; }
  .spec-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .spec-card { min-height: 116px; padding: 13px; }
  .spec-card strong { font-size: 1.13rem; }
  .dimension-figure { padding: 9px; }
  .policy-row { grid-template-columns: 35px minmax(0,1fr); gap: 9px; }
  .contact-card { grid-template-columns: 1fr; padding: 20px; }
}